The magnitude E of an electric field depends on the radial
Chapter , Problem 72(choose chapter or problem)
The magnitude E of an electric field depends on the radial distance r according to E ! A/r 4 , where A is a constant with the unit voltcubic meter. As a multiple of A, what is the magnitude of the electric potential difference between r ! 2.00 m and r ! 3.00 m?
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